Encyclopedia of Microtonal Music Theory

major-7th / major seventh / maj7 / M7

[Joe Monzo]

The larger of the two diatonic intervals which encompass 7 degrees of the of the diatonic scale. The major-7th is composed of 5 tones (i.e., whole-tones) and 1 diatonic semitone, and is one chromatic semitone larger than the minor-7th.